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|Title:||Strongly secure certificateless key exchange without pairing|
|Authors:||Yang, G. |
|Source:||Yang, G.,Tan, C.-H. (2011). Strongly secure certificateless key exchange without pairing. Proceedings of the 6th International Symposium on Information, Computer and Communications Security, ASIACCS 2011 : 71-79. ScholarBank@NUS Repository. https://doi.org/10.1145/1966913.1966924|
|Abstract:||In certificateless cryptography, a user secret key is derived from two partial secrets: one is the identity-based secret key (corresponding to the user identity) generated by a Key Generation Center (KGC), and the other is the user self-generated secret key (corresponding to a user self-generated and uncertified public key). Two types of adversaries are considered for certificateless cryptography: a Type-I adversary who can replace the user self-generated public key (in transmission or in a public directory), and a Type-II adversary who is an honest-but-curious KGC. In this paper, we present a formal study on certificateless key exchange (CLKE). We show that the conventional definition of Type-I and Type-II security may not be suitable for certificateless key exchange when considering the notion of forward secrecy which is important for key exchange protocols. We then present a new security model in which a single adversary (instead of Type-I and Type-II adversaries) is considered. We also construct a strongly secure certificateless key exchange protocol without expensive pairing operations. As far as we know, our proposed protocol is the first proven secure CLKE protocol without pairing. Copyright 2011 ACM.|
|Source Title:||Proceedings of the 6th International Symposium on Information, Computer and Communications Security, ASIACCS 2011|
|Appears in Collections:||Staff Publications|
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